set 3 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 3 EXERCISES
The following question based on fuel, food preservation, nutrition, medicine, detergents and fertilizers topic of general science mcq
(a) N2
(b) CH4
(c) CO3
(d) H2
The correct answers to the above question in:
Answer: (b)
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Question : 1
The Pressure gauge is not given in the domestic LPG cylinders because
a) Their use is not safe
b) They are so costly
c) They cannot represent the quantity of gas in LPG cylinders
d) They are choked by LPGs
Answer »Answer: (c)
Question : 2
Consider the following statements. Sodium silicate and sodium sulphate are mixed as detergents in washing powders so that
- To maintain dryness of the powder.
- To maintain the basicity of powder.
a) Only 2
b) Both 1 and 2
c) Only 1
d) None of these
Answer »Answer: (b)
Question : 3
Tetraethyl Lead (TEL) is added to petrol
a) To increase its anti-knocking rating
b) To prevent it from freezing
c) To increase its flash points
d) To increase its boiling point
Answer »Answer: (a)
Question : 4
Aspartame is an artificial sweetner sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is used as a low calorie sweetening agent in food items. What is the basis of this use?
a) When aspartame is used in food processing, the sweet taste remains, but it becomes resistant to oxidation
b) Aspartame is as sweet as sugar but after ingestion into the body, it is converted into metabolites that yield no calories
c) Aspartame is as sweet as table sugar, but unlike table sugar, it is not readily oxidized in the human body due to lack of requisite enzymes
d) Aspartame is several times sweeter than table sugar, hence food items made with small quantities of aspartame yield fewer calories on oxidation
Answer »Answer: (d)
Question : 5
Which one of the following gases, released from biogas plant is used as a fuel gas?
a) Methane
b) Butane
c) Propane
d) Ethane
Answer »Answer: (a)
Question : 6
What percentage of phosphorus (P2 S5 ) and Nitrogen (N) is present in DAP?
a) 30% N and 46% $P_2O_5$
b) 10% N and 20% $P_2O_5$
c) 18% N and 46% $P_2O_5$
d) 35% N and 70% $P_2O_5$
Answer »Answer: (c)
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